Computerized systems and methods for large-scale product listing

A computer-implemented system for updating product information on a webpage, the system comprising:

• at least one processor;
• and
• at least one non-transitory storage medium comprising instructions that, when executed by the at least one processor, cause the at least one processor to perform steps comprising:
• providing product information associated with at least one first product for sale of a plurality of products for sale to a workflow system, wherein the workflow system is configured to begin at least one workflow comprising one or more tasks and configured to process multiple workflows substantially simultaneously;
• storing a timestamp for each task of each workflow of the multiple workflows of the workflow system;
• determining a most recently performed task of the workflow system based on a most recently stored timestamp;
• and
• sending a message indicating the most recently performed task of the workflow system to a first seller of a plurality of sellers,
• wherein each of the multiple workflows is configured to perform steps comprising:
• determining, based on historical data of each seller of the plurality of sellers and at least one product for sale of the plurality of products for sale associated with each seller of the plurality of sellers, a priority of each request of a plurality of requests from the plurality of sellers associated with updating product information on a webpage;
• based on the determined priority, determining a sequence of validating the product information;
• validating the product information;
• storing the validated product information associated with the at least one product for sale in a database;
• listing the at least one product for sale on the webpage;
• and
• sending a notification of the listing associated with the at least one product for sale to each seller of the plurality of sellers corresponding to the at least one product for sale.